Song Xiaoyu, Yi Wencai, Li Junfang, Kong Qinghong, Bai Hua, Xi Guangcheng
Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P. R. China.
School of the Environment and Safety engineering, Jiangsu University, Zhenjiang, 212013, P. R. China.
Nano Lett. 2021 May 26;21(10):4410-4414. doi: 10.1021/acs.nanolett.1c01099. Epub 2021 May 10.
γ-MoN and δ-MoN are the two most important molybdenum nitrides, but controllable preparation of them with high surface area has not been achieved. Herein, we achieved selective preparation of γ-MoN and δ-MoN. The key factor for the selective preparation of γ-MoN and δ-MoN is to control the crystal phase of the precursor MoO. In HO and NH mixed gas, the α-MoO nanoribbons are nitridated to obtain γ-MoN single-crystal porous nanobelts, while the h-MoO prisms are nitrided to obtain δ-MoN hierarchical porous columns. The corrosion effect of HO plays a key role in the formation of single-crystal porous structure. The γ-MoN flexible membrane composed of the single-crystal porous nanobelts exhibits strong localized surface plasmon resonance and surface enhanced Raman scattering effect, which show highly sensitive response to polychlorinated phenol.
γ-MoN和δ-MoN是两种最重要的氮化钼，但尚未实现对它们进行具有高表面积的可控制备。在此，我们实现了γ-MoN和δ-MoN的选择性制备。选择性制备γ-MoN和δ-MoN的关键因素是控制前驱体MoO的晶相。在H₂O和NH₃混合气体中，α-MoO₃纳米带被氮化以获得γ-MoN单晶多孔纳米带，而h-MoO₃棱柱被氮化以获得δ-MoN分级多孔柱。H₂O的腐蚀作用在单晶多孔结构的形成中起关键作用。由单晶多孔纳米带组成的γ-MoN柔性膜表现出强烈的局域表面等离子体共振和表面增强拉曼散射效应，对多氯苯酚表现出高度敏感的响应。
